US3011909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer comprising an epoxy resin, a phenol-formaldehyde resin and a methyl methacrylate polymer, and method of bonding a vinyl resin coating to a surface therewith
Assignee: PPG Industries Inc
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Filing: 1957-01-16
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Granted: 1961-12-05
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Expires: 1977-01-16
Abstract
No abstract record available.
Inventors
- 👤 Donald P Hart
- 👤 Joseph E Plasynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:27
CPC Classifications
F; F16; F16L; F16L21/00; B; B65; B65D; B65D41/00; B65D41/02; B65D41/10; B65D41/12; C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; C09D163/00; C08; C08L; C08L61/00; C08L61/04; C08L63/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A METHOD OF BONDING A VINYL RESIN COATING TO A SURFACE COMPRISING APPLYING TO THE SURFACE, A PRIMER COMPRISING A TERNARY BLEN OF A COPOLYMER OF (A) AN EPOXY RESIN WHICH IS A REACTION PRODUCT OF A POLYPHENOL AND EPICHLOROHYDRIN, (B) A HEAT REACTIVE PHENOL-FORMALDEHYDE RESIN AND (C) AN INTERPOLYMER OF ABOUT 50 TO ABOUT 99 PERCENT OF METHYL METAHACRYLATE, THE REST OF THE INTERPOLYMER BEING ESSENTIALLY AN ADDED MONOMER WHICH IS AN ESTER OF AN ALCOHOL CONTAINING A >C=CH2 GROUP AND A CARBOXYLIC ACID, SAID PRIMER COATING FURTHER BEING COATED WITH A PLASTISOL COMPRISING VINYL CHLORIDE AND AN ESTER PLASTICIZER THEREFOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |